1. Why ___________ is better: Cost of printed antennas varies between 24-44% of copper antennas - Printed antennas show 93-96% radiation efficiency compared to copper antennas...
Answer
Correct Answer:
Tag Antenna Construction
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2. Every time a tag is read - it is saved to this
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Correct Answer:
Tag List
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3. 'Central nervous system' of entire RFID hardware system. Establishing communication with and control of this component is the most important task of any entity which seeks integration
Answer
Correct Answer:
RFID Reader
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4. Provides electrical power to other tag elements - Can harvest power from the signal received from the reader - Can have its own internal power source - Active - semi-passive and passive
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Correct Answer:
Power Source
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6. Reader receives and executes commands from an application running on a host machine from a user using a vendor-supplied client to communicate with the reader. After reader fully executes the current command - it waits for the next. Reader can execute
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Correct Answer:
Interactive Mode
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7. Controls the internal functions under the command of the processor
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Correct Answer:
Control Circuitry
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8. Divides time into discrete time intervals (slots) . A packet can only be transmitted at the beginning of a slot - reduces the collision duration.
Answer
Correct Answer:
Slotted ALOHA
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9. When two waves (in phase) impose on each other and enhance the original signal and give rise to protrusions
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Correct Answer:
Constructive Interference
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10. Frequencies between 30-300 KHz - Generally use passive tags - have low data-transfer rates from the tag to the reader - and are especially good if the operating environment contains metals - liquids - dirt - snow - or mud. Active tags also available
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Correct Answer:
Low Frequency (LF)
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11. Reader that can operate in different frequencies or can use different tag-to-reader communication protocols (generally stationary)
Answer
Correct Answer:
Agile Reader
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12. RF energy radiates from antenna in linear fashion - Provide longest range - Sensitive to the orientation of tag - Has single E-field component - Can have a narrow beam pattern - Best for application with known tag orientation
Answer
Correct Answer:
Linear Polarized Reader Antenna
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13. This type of antenna is largely unaffected by tag orientation - Preferred in system that uses high UHF or microwave frequencies in an operating environment where there is a high degree of RF reflectance (due to presence of metals and so forth)
Answer
Correct Answer:
Circular Polarized Antenna
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14. Broadcasts the reader transmitter's RF signal into its surroundings and receives tag responses on the reader's behalf. Therefore - proper positioning of these (NOT THE READERS) is essential for good read accuracy
Answer
Correct Answer:
Reader Antenna
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15. When two waves (out of phase) impose on each other and the original signal is cancelled. Nulls are created s a result
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Correct Answer:
Destructive Interference
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16. Die-cut web adhesive - paper face
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Correct Answer:
Tag
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17. An electronic signal or indicator - Audible alarms - strobes - light stacks - etc.
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Correct Answer:
Annunciator
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18. Image "burned" into photopolymer layer. All copper removed except where image was burned. Copper antenna goes through additional processes to protect from oxidation
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Correct Answer:
Copper Etching
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19. The orientation of the transmitted electromagnetic field or the direction of oscillation of electromagnetically emitted waves
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Correct Answer:
Polarization
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20. Readability of a tag greatly depends on this and the angle at which the tag is presented to the reader
Answer
Correct Answer:
Polarization
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21. A mechanical device for controlling or moving objects - A programmable logic controller (PLC) - robot arm - mechanical arm - etc.
Answer
Correct Answer:
Actuator
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22. In this this antenna type - the RF waves emanate in a linear pattern from the antenna. Waves have only one energy field
Answer
Correct Answer:
Linear Polarized Antenna
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23. IC Chip - Antenna/Inductor - Power Source
Answer
Correct Answer:
Main Components of RFID Tag
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24. One of the most versatile actuators. Widely used in manufacturing plants. They enable a variety of actions to be performed (such as monitoring and controlling a product packaging line - or applying a predetermined amount of torque to nuts in a mechan
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Correct Answer:
PLC
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25. Type of stationary reader that can print a bar code and create (i.e. write) an RFID tag on a smart label in an integrated operation - Reads the smart label tag that it has just written to validate the write operation. If the validation fails - it rej
Answer
Correct Answer:
RFID Printer
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26. Determines the read zone of a reader - Also called an antenna pattern - 3D region shaped somewhat like an ellipsoid or a balloon projecting out the front of the antenna. Never uniformly shaped like an ellipsoid but almost always contains deformities
Answer
Correct Answer:
Antenna Footprint
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27. Mount the tiny chip to a strap - Greater handling ability - Possibility to use very small chips - Possibility of higher volume production - Fluidic Self Assembly
Answer
Correct Answer:
Strap-to-Tag
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28. Smart cards - smart label - etc.
Answer
Correct Answer:
Types of tags
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29. Also called a fixed reader - Mounted on a wall - portal - or some suitable structure in the read zone. Readers not generally very tolerant of harsh environmental conditions - therefore if installed outdoors or on moving objects - take care to ruggedi
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Correct Answer:
Stationary Reader
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30. Measurement of power for radiation of antenna used in US
Answer
Correct Answer:
Equivalent Isotropic Radiated Power (EIRP)
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